Two stage thermostatic valve device

Details Two stage thermostatic valve device Two stage thermostatic valve device

1996-10-31

1997-11-25

Tapolcai, William E.

Automatic temperature and humidity regulation

Cooling radiator

Bypass

13763015, 236100, F01P 716

Patent

active

056902760

ABSTRACT:
A thermostat having a main valve and a secondary valve is disclosed both of which are biased closed by a single coiled compression spring and opened by a single piston. The entrance to the channel of the secondary valve is maintained at a maximum dimension of approximately 0.015 inches in order to keep undesirable particulate matter out of the valve. The surfaces within the valve channel encourage laminar flow which increases the volume of flow which can be passed through the valve while keeping the total surface area of the valve small.

REFERENCES:
patent: 2844323 (1958-07-01), Engstrom
patent: 3190314 (1965-06-01), Visos et al.
patent: 4615354 (1986-10-01), Bianchi
patent: 5238185 (1993-08-01), Saur et al.
patent: 5549244 (1996-08-01), Kai et al.

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